Adaptations

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CHARACTERISTICS OF LIFE
All living things change to fit
their environment
ADAPTATIONS!!!!!!!!
Inherited Characteristics
Why do tigers have stripes?
Why are bullfrogs green on the back and white
on the belly?
Why do giraffes have such a long neck?
Why do geese fly south for the winter?
Why do waterlilies float?
Why do some plants bear fruit?
All of these questions deal with
adaptations!!!
What are adaptations?
Adaptations вЂ“ an inherited characteristic that helps
an organism to survive long enough to reproduce
more successfully in its changing environment and
can either be structural or behavioral.
If red touches
yellow, deadly
fellow. If red
touches black,
friendly jack.
Structural Adaptations
Definition: Actual body parts or coloration that
help an organism survive in their environment.
EX: camouflage, mimicry, bent hind legs, sharp
teeth and claws, body structures.
Behavioral Adaptations
вЂў Definition: Ways an organism act to help
them survive in their environment.
вЂў EX: Migration, hibernation, warning calls,
mating dances, hunting in packs.
Types of Structural Adaptations
CAMOUFLAGE/COLORATION: blending in with the
environment for protection from predators or to help sneak
up on prey.
Use: Obtaining
food and
protection
Types of Structural Adaptations
MIMICRY: copying a behavior or appearance.
Used for protection or obtaining food and protection.
Types of Structural Adaptations
Bent hind legs вЂ“ prey run fast to escape & predators
run fast to catch prey
Used for: protection,
locomotion
Types of Structural Adaptations
Types of Structural Adaptations
Body Structures
Predator вЂ“ Eyes facing forward to
find prey.
flippers
wings
Bent legs
We have been looking at structural adaptations
of animals. ADAPTATIONS ON THE BODY,
but animals can also have behavioral
adaptations. This type of adaptation cannot be
seen on the body. It is the way an animal reacts
or behaves in certain situations. In other
words: INSTINCTS
In simple animals, behavior is governed almost
entirely by instinct, meaning that it is preprogrammed by an animal's genes. In more
complex animals, instinctive behavior is often
modified by learning, producing more-flexible
responses to the outside world.
Behavioral Adaptations
1. Migration - seasonal or periodic
movement of animals in response to
changes in climate or food availability, or
to ensure reproduction.
Migration most commonly involves
movement from one area to another and
then back again.
Examples: geese, whales, salmon,
Monarch butterflies
Behavioral Adaptations
2. Hibernation вЂ“ adaptive winter survival
technique where animal becomes inactive
and all body processes slow down.
In cold weather most animals must eat large
quantities of food to obtain the energy
needed to carry on normal body activities.
Examples: bears, chipmunks,
squirrels, bats,
Behavioral Adaptations
3. Living in a Group вЂ“ more
eyes in a group to watch
out for prey or predator,
protection
Examples: fish,
wildebeest,
walruses,
lions
Behavioral Adaptations
4. Tool Use - any
object
manipulated by an
animal in order to
perform a specific
task. (monkeys, otters,
birds)
5. Playing Dead - By pretending
that they are dead, some animals
escape bodily harm. (snakes,
possums)
Behavioral Adaptations
6. Calling вЂ“
communication
between animals
7. Threatening
Gestures вЂ“ scares
off potential
predators
PLANT ADAPTATIONS
All living things adapt is a characteristic of life.
All 6 kingdoms adapt. Animals are not the only
organisms to adapt.
Structural Plant Adaptations
1. Structures - adaptations on the body:
holdfasts, empty space for water storage, catch
animals for minerals, tallness, heartiness, thorns,
flexibility, floatation devices
2. Seeds вЂ“ all seeds have adaptation to
better enable it to survive long enough
to plant itself and grow.
Plant Adaptations
Protection вЂ“ thorns, bad taste, poison,
coloration, spikes
Obtaining Food вЂ“ All plants do
photosynthesis and make glucose in their
leaves. The larger the leaves the more
Sun they can capture.
Plant Adaptations
SEEDS
Seeds are the baby plants!!! They are formed
when the pollen fertilizes the egg. Fruit
protects the seed.
PLANT STRUCTURE ADAPTATIONS
Below are pictures of plants. Pick out their
adaptations.
SEED ADAPTATIONS
For plants to survive, seeds have to be dispersed
away from the parent plant.
Types of seed dispersal:
SEED DISPERSAL
Look at the seeds below and name how they
are dispersed.
Plant REPRODUCTION (Pollination)
Male вЂ“ Stamen
Top of stamen is the anther,
pollen made in the anther.
Female вЂ“ Pistil
Ovule (egg) вЂ“ becomes a
seed.
Ovary вЂ“ becomes fruit.
Fertilization вЂ“ occurs when the pollen from the anther is
carried to the pistil by animals. The sperm(pollen) falls
down the style to the egg and fertilizes the egg.
PLANT BEHAVIORS
Plants not only have structural adaptations;
they have behaviors that help them to survive in
their environment.
Tropism: movement of a plant toward or away
from a stimulus. Toward is called positive, away
is called negative.
Example 1-Phototropism
вЂў When the plant senses light and the shoots
(stems & leaves) grow toward the light
source.
вЂў This is a positive tropism because the plant
is growing toward the stimulus.
Example 2-Gravitropism
вЂў When growth of a plant changes in
response to direction of gravity.
Shoots (stems & leaves)
have a negative
Gravitropism
because they grow in the
opposite direction of the
force of gravity.
пѓџ
Roots mostly have positive gravitropism because they grow toward
the force of gravity (downward).
пѓ Ex: gravitropism вЂ“ responding to gravity
Stems grow up
(negative)
Roots grow
down
(positive)
PLANT BEHAVIORAL ADAPTATIONS
DORMANCY - A state of rest or inactivity.
Many plants go dormant in the winter. Fall is the time of
year when plants are preparing for dormancy.
Why do trees
loose their leaves
in the fall?
What other types of
plants go dormant in the
winter?
DORMANCY
вЂў Seasonal Changes in Trees to survive
winter. All trees lose their leaves at some
point. Stop taking in water so the xylem
will not freeze.
вЂў Trees like pines and holly lose their leaves
all through out the year. They are called
evergreens.
Pines
Holly